Heater



Aug. 9, 1921'; 1,638,581

H. L. HORNING ET AL HEATER Filed March 30, 1925 Patented Aug. 9, 1927.

HARRY L. ORNING, JAMES B. FISHER, Ann ARTHUR w. Porn, m, or w AUKEsHA,

" e-r FFICE WISGONSI N, ASSIGNORS TO WAUKESHA MOTOR COMPANY, OF WAUKESI-IA, WHIS- CONSIN, A CORPORATION OFYWISCONSIN. i r i HEATER.

Application filed March so, 1925. Serial 'No. 19,282.

This invention relates to an improved heater adaptable particularly for use in connection with explosive engines for controlling the, temperature of the air before it fl'reaches the air intake of the carburetor.

which supplies the engine with explosive mixtures. Y The object of the invention is to producea simple construction whichcan be'readily attached tothe frame or exhaust 7 manifold of an engine to receive the heat therefrom and tobe either manually or automatically adjusted to. efliciently control the temperature of 'the intake air so that the air 7 will'be properly heated while the engine is idlingor working underlight'load and so that less heat will beapplied to the air as the engine speed increases, Generally speak- I ing, the heater comprisesgadirect cold alr I passageway and a'shunt heated air passagewayytogether with a valv'emechanlsm'readilyoperable to shunt more "or less of the'air through the heated passageway and to shut off the heated passageway when theengine is at'full speed or load. For automatic con trol, the valve structure will he automatically adjusted by the pressure of the air flowing directly through the direct air' passage. I The invention will be more fully understood by reference to'the accompanying drawings,

in which? I v I Figgil is a top elevational' view with parts broken away;v

. .Fig. 2' is a front elevational parts brokenfa'way; andv r viewf with a Fig. 3 is a sectional view plane of Fig. 2.

The integral'casting'and comprises the part 10 forming the direct air passageway 11, and

' v the elongated part 12 extendingv at right angles from the part lO and forming the heater section. The part 10 is shown of circular cross section and the part 12 of ree 'tangular cross section. The front of the heating section is closed by the Wall 13,.but the rear side of the part 12 isopen a-nd'has the peripheral seating flange 14 by means of "whieh it maybe seated against a heating surface, such as the wall 15 of the exhaust manifold-of'an explosive engine. Running longitudinally in thepart 12 along a median plane is the partition 16 which extends from the passageway ll up to" within a short dis tance of the oppositeend of the part 12, so

heater body may be injthe form of an as to form the incoming and outgoing air -passageways 17 and 18. The structure may be detach'ahly secured to the supporting wall 1 15 by means of screwsj19, the heat from the heated wall then extendingiinto-the passageways 17 and 18 and heating the" air flowing therethrough. v

ture at-the juncture of the partsllO and12 in'the front lug 20 and the rear wall] section 21, and at'its'front end is deflected to form Extending'transverselyo through the' strum Q; v

the lever arm 22'onwhich a weight 23 is,

adjustable The spindle 19"extends along the end of the partition 16, and securedon the "spijndleis the valveplate 24, which is of section lOI The weight 23 tends to swing the spindle structure to normalposition with the inner part of the valve plate extending rectangular shape to fit betweenj the walls '13 and 21, and atits outer end is semiciroulongitudinallyjand' against the top of the partltion 16, and 'with'the outer end of the I plate transversely across the' passageway-ll' .and against a stop project'ionf25. =This is the normal or one extreme position of the I valve plate." In its other extremeposition,

it will be vertical andin position. in front to shut these passageways off from the direct of the ends of-the passageways 17 I and 18 air passageway "11. r. Thedotted lines show .I

of. the weighted lever.

In practice, the lower, 7 is connected loy-a'conduit 26 with'the air in-' this "extreme positionof the'valve plate and f end of the part 10 take of the carburetor for the. engine to which theheater is applied, such air-intake I I delivering air for the explosive mixture 7 1 within the carbureting chamber which,.un-

'der control of a throttle valve, is connected with the fuel intake of the engine. 7

'As before jstated, the;action of the weight z z f v 23'tends to keep thevalve plate in posit1on I to close the directpasageway 11 so that v. v ,7

when the throttle valve, at the carhuretor is'in position to permit only limited suction efi'ort atthe carburetor-air intake and consequently t the'lower end of the passage 1 r I way 11 of the heater, the suction will not be sufficient to pull down the valve plate '1 24 against the weight' 23 and the supplyair flowing into the top ofthepassageway 11 above. the valve pl t will circulate through of said direct passageway and the inlet and through said direct passageway and at said 10 outlet ends of said heated passageway, said heated passageway ends when in intermedivalve structure being operable to close said direct passageway and to expose the ends of said heated passageway when in one position, and adapted to open said direct passageway and to close the ends of said heated passageway when in another position, and adapted to control the partial opening ate positions.

In wltness whereof, We hereunto subscribe our names this 27 day of March, 1925.

, HARRY L. HORNING.

JAMES B. FISHER. I ARTHUR w; POPE, JB; 7 

